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  • Oracle Excellence Awards 2012

    - by A&C Redaktion
    Spezialisierte Partner können sich ab sofort bis 29. Juni als „Specialized Partner of the Year“ bewerben. Damit honoriert Oracle diejenigen OPN Partner in EMEA, die sich mithilfe der Spezialisierung besonders ausgezeichnet haben, sei es durch einen hohen Mehrwert für deren Endkunden oder innovativen Lösungen und Services. Voraussetzung für eine Bewerbung ist mindestens eine abgeschlossene Spezialisierung in diesen sieben Kategorien: Specialized Partner of the Year: Database Specialized Partner of the Year: Applications Specialized Partner of the Year: Middleware Specialized Partner of the Year: Industry Specialized Partner of the Year: Oracle Accelerate Specialized Partner of the Year: Servers and Storage Systems Specialized Partner of the Year: Oracle on Oracle Der Gewinner eines “Specialized Partner of the Year” EMEA Awards erhält 5.000 US-Dollar MDF und vielfältige Möglichkeiten, sich in Szene zu setzen. Wie auch im letzten Jahr wird der Award wieder auf der Oracle OpenWorld in San Francisco überreicht. Interviews, Videos, Werbung, Berichte im Oracle Magazine und ein kostenloser Konferenzpass sind natürlich inklusive. Wie immer, gilt die Bewerbung für den EMEA-Award gleichzeitig als Bewerbung für den deutschen Partner-Award 2012, der auf dem Oracle Partner Day (im Herbst nach der OpenWorld) verliehen wird. Normal 0 21 false false false DE X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Die Nominierung Ihres erfolgreichen Projektes muss diesmal hier auf Englisch eingereicht werden, da eine internationale Jury entscheidet. Beschreiben Sie Ihr Projekt so ausführlich wie möglich, damit sich die Juroren ein gutes Bild Ihrer Leistungen und Services machen können. Wenn Sie hierbei Unterstützung benötigen, fragen Sie einfach Ihren Channel Manager. Denn: Je aussagekräftiger Ihre Unterlagen sind, desto höher ist Ihre Chance zu gewinnen! Alle Informationen zu den diesjährigen Awards finden Sie auf der Oracle Excellence Awards Website. Wir drücken Ihnen die Daumen!

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  • Oracle Excellence Awards 2012

    - by A&C Redaktion
    Spezialisierte Partner können sich ab sofort bis 29. Juni als „Specialized Partner of the Year“ bewerben. Damit honoriert Oracle diejenigen OPN Partner in EMEA, die sich mithilfe der Spezialisierung besonders ausgezeichnet haben, sei es durch einen hohen Mehrwert für deren Endkunden oder innovativen Lösungen und Services. Voraussetzung für eine Bewerbung ist mindestens eine abgeschlossene Spezialisierung in diesen sieben Kategorien: Specialized Partner of the Year: Database Specialized Partner of the Year: Applications Specialized Partner of the Year: Middleware Specialized Partner of the Year: Industry Specialized Partner of the Year: Oracle Accelerate Specialized Partner of the Year: Servers and Storage Systems Specialized Partner of the Year: Oracle on Oracle Der Gewinner eines “Specialized Partner of the Year” EMEA Awards erhält 5.000 US-Dollar MDF und vielfältige Möglichkeiten, sich in Szene zu setzen. Wie auch im letzten Jahr wird der Award wieder auf der Oracle OpenWorld in San Francisco überreicht. Interviews, Videos, Werbung, Berichte im Oracle Magazine und ein kostenloser Konferenzpass sind natürlich inklusive. Wie immer, gilt die Bewerbung für den EMEA-Award gleichzeitig als Bewerbung für den deutschen Partner-Award 2012, der auf dem Oracle Partner Day (im Herbst nach der OpenWorld) verliehen wird. Normal 0 21 false false false DE X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Die Nominierung Ihres erfolgreichen Projektes muss diesmal hier auf Englisch eingereicht werden, da eine internationale Jury entscheidet. Beschreiben Sie Ihr Projekt so ausführlich wie möglich, damit sich die Juroren ein gutes Bild Ihrer Leistungen und Services machen können. Wenn Sie hierbei Unterstützung benötigen, fragen Sie einfach Ihren Channel Manager. Denn: Je aussagekräftiger Ihre Unterlagen sind, desto höher ist Ihre Chance zu gewinnen! Alle Informationen zu den diesjährigen Awards finden Sie auf der Oracle Excellence Awards Website. Wir drücken Ihnen die Daumen!

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  • Fujitsu Raku-Raku SmartPhone: Japanese Digital Seniors UX Insight from @debralilley

    - by ultan o'broin
    Super blog posting on the super-important subject of digital inclusion by Oracle partner Fujitsu appstech maven and Oracle Applications User Experience FXA-er and ACE Director Debra Lilley (@debralilley). Debra tells us how Fujitsu is enabling digital inclusion for older mobile users in Japan with their  Raku-Raku (??????. ????)smart phone: Fujitsu Raku-Raku - My UX Homework (Raku-Raku means easy or comfortable in Japanese). There are UX mobile, social media, and methodology takeaways there for us in Debra's blog. Fujitsu Raku-Raku Smartphone Demo  I encourage you to read Debra's blog. In it, she makes reference to a tailored social media experience for those digital seniors (???????) as they'd be called in Japan (UK and Ireland uses the term silver surfers). You can find that online experience here. Online Community site for Fujitsu Raku-Raku Smartphone Digital Seniors (English translation via Google Translate) It's an important reminder that UX is global sure, but also that worldwide accessibility and digital inclusion are priorities too for UX. It's vital that we understand such aspects of technology adoption and how the requirements of different categories of technology users can be met. Oracle is committed to providing the best possible user experience for enterprise users of all ages and abilities. That means talking with all sorts of people worldwide and understanding how and why they want to use our technology and what their context of use is. You can read more about Oracle's accessibility program on our corporate website. Proud to say I prompted a few questions in Japan all the way from Ireland. So, UX is not only global but you can drive UX research globally too without ever leaving home. Brilliant job, Debra. Here's to more such joint research creativity and UX collaborations worldwide between us. Wondering where we might go next? And what a fun way to do things too!

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  • Adapters, SOA Suite and More @Openworld 2012

    - by Ramkumar Menon
    You are invited to attend my sessions at Oracle Openworld 2012 at San Francisco! CON8627 - Administration and Management Essentials for Oracle SOA Suite 11g Session Speakers: Ramkumar Menon, Francis Ip Session Schedule: Monday, Oct 1, 1:45 PM - 2:45 PM - Session Location: Marriott Marquis - Salon 7 CON8642 - Cloud and On-Premises Applications Integration using Oracle Integration Adapters Session Speakers: Vikas Anand, Ramkumar Menon, Stephen Mcritchie Session Schedule: Wednesday, Oct 3, 1:15 PM - 2:15 PM Session Location: Moscone South - 310 And do stop by at the Oracle Integration Adapters Demo booth. Watch some live demos on how you can use our suite of Adapters to integrate and extend your Enterprise Applications! This is your opportunity to meet with our Engineering team, share with us your Integration use-cases and challenges, and hear from us on our Roadmap. The Oracle Integration Adapters booth is located at the Fusion Middleware Demopod area  from Monday, October 1 through Wednesday, October 3, 2012.

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  • Myths about Coding Craftsmanship part 2

    - by tom
    Myth 3: The source of all bad code is inept developers and stupid people When you review code is this what you assume?  Shame on you.  You are probably making assumptions in your code if you are assuming so much already.  Bad code can be the result of any number of causes including but not limited to using dated techniques (like boxing when generics are available), not following standards (“look how he does the spacing between arguments!” or “did he really just name that variable ‘bln_Hello_Cats’?”), being redundant, using properties, methods, or objects in a novel way (like switching on button.Text between “Hello World” and “Hello World “ //clever use of space character… sigh), not following the SOLID principals, hacking around assumptions made in earlier iterations / hacking in features that should be worked into the overall design.  The first two issues, while annoying are pretty easy to spot and can be fixed so easily.  If your coding team is made up of experienced professionals who are passionate about staying current then these shouldn’t be happening.  If you work with a variety of skills, backgrounds, and experience then there will be some of this stuff going on.  If you have an opportunity to mentor such a developer who is receptive to constructive criticism don’t be a jerk; help them and the codebase will improve.  A little patience can improve the codebase, your work environment, and even your perspective. The novelty and redundancy I have encountered has often been the use of creativity when language knowledge was perceived as unavailable or too time consuming.  When developers learn on the job you get a lot of this.  Rather than going to MSDN developers will use what they know.  Depending on the constraints of their assignment hacking together what they know may seem quite practical.  This was not stupid though I often wonder how much time is actually “saved” by hacking.  These issues are often harder to untangle if we ever do.  They can also grow out of control as we write hack after hack to make it work and get back to some development that is satisfying. Hacking upon an existing hack is what I call “feeding the monster”.  Code monsters are anti-patterns and hacks gone wild.  The reason code monsters continue to get bigger is that they keep growing in scope, touching more and more of the application.  This is not the result of dumb developers. It is probably the result of avoiding design, not taking the time to understand the problems or anticipate or communicate the vision of the product.  If our developers don’t understand the purpose of a feature or product how do we expect potential customers to do so? Forethought and organization are often what is missing from bad code.  Developers who do not use the SOLID principals should be encouraged to learn these principals and be given guidance on how to apply them.  The time “saved” by giving hackers room to hack will be made up for and then some. Not as technical debt but as shoddy work that if not replaced will be struggled with again and again.  Bad code is not the result of dumb developers (usually) it is the result of trying to do too much without the proper resources and neglecting the right thing that needs doing with the first thoughtless thing that comes into our heads. Object oriented code is all about relationships between objects.  Coders who believe their coworkers are all fools tend to write objects that are difficult to work with, not eager to explain themselves, and perform erratically and irrationally.  If you constantly find you are surrounded by idiots you may want to ask yourself if you are being unreasonable, if you are being closed minded, of if you have chosen the right profession.  Opening your mind up to the idea that you probably work with rational, well-intentioned people will probably make you a better coder and it might even make you less grumpy.  If you are surrounded by jerks who do not engage in the exchange of ideas who do not care about their customers or the durability of the code you are building together then I suggest you find a new place to work.  Myth 4: Customers don’t care about “beautiful” code Craftsmanship is customer focused because it means that the job was done right, the product will withstand the abuse, modifications, and scrutiny of our customers.  Users can appreciate a predictable timeline for a release, a product delivered on time and on budget, a feature set that does not interfere with the task(s) it is supporting, quick turnarounds on exception messages, self healing issues, and less issues.  These are all hindered by skimping on craftsmanship.  When we write data access and when we write reusable code.   What do you think?  Does bad code come primarily from low IQ individuals?  Do customers care about beautiful code?

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  • Update Since Microsoft/PSC Office Open XML Case Study

    - by Tim Murphy
    In 2009 Microsoft released a case study about a project that we had done using the OOXML SDK 1.0 for Research Directors Inc.  Since that time Microsoft has released version 2.0 of the SDK and PSC has done significant development with it.  Below are some of the mile stones we have reached since the original case study. At the time of the original case study two report types had been automated to output as PowerPoint presentations.  Now that the all the main products have been delivered we have added three reports with Word document outputs and five more reports with PowerPoint outputs. One improvement we made over the original application was to create a PowerPoint Add-In which allows the users to tag a slide.  These tags along with the strongly typed SDK 2.0 allows for the code to use LINQ to easily search for slides in the template files.  This allows for a more flexible architecture base on assembling a presentation from copied slide extracted from the template. The new library we created also enabled us to create two new Word based reports in two weeks.  The library we created abstracts the generation of the documents from the business logic and the data retrieval.  The key to this is the mark up.  Content Controls are a good method for identifying sections of a template to be modified or replaced.  Join this with the concept of all data being generically either scalar or two dimensional and the code becomes more generic. In the end we found the OOXML SDK 2.0 to be a great tool for accelerating document generation development and creating happy clients.  del.icio.us Tags: PSC Group,OOXML,Case Study,Office Open XML,Word,PowerPoint

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  • The Silverlight 4 Training Kit and Green Eggs &amp; Ham

    - by Jim Duffy
    Microsoft has released the Silverlight 4 Training Kit that steps you through the process of constructing Silverlight 4 business applications. “The Silverlight 4 Training Course includes a whitepaper explaining all of the new Silverlight 4 features, several hands-on-labs that explain the features, and a 8 unit course for building business applications with Silverlight 4. The business applications course includes 8 modules with extensive hands on labs as well as 25 accompanying videos that walk you through key aspects of building a business application with Silverlight. Key aspects in this course are working with numerous sandboxed and elevated out of browser features, the new RichTextBox control, implicit styling, webcam, drag and drop, multi touch, validation, authentication, MEF, WCF RIA Services, right mouse click, and much more!” What I think is pretty cool is that there are two ways to access this content, online and offline. Obviously the online version is great when you’re sitting at your desk and you’re connected to the web. What about when you don’t have a connection like when you’re located where you won’t eat green eggs & ham, like on a train or on plane perhaps? :-) You can download the offline version and hope that Sam I Am won’t be to distracting while you try to watch the videos or work your way through the labs. :-) Have a day. :-|

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  • BizTalk &ndash; Routing failure on Delivery Notifications (BizTalk 2006 R2 to 2013)

    - by S.E.R.
    Originally posted on: http://geekswithblogs.net/SERivas/archive/2013/11/11/biztalk-routing-failure-on-delivery-notifications.aspxThis is a detailed explanation of a something I posted a few month ago on stackoverflow, concerning a weird behavior (a bug, really…) of the delivery notifications in BizTalk. Reminder: what are delivery notifications Mechanism BizTalk has the ability to automatically publish positive acknowledgments (ACK) when it has succeeded transmitting a message or negative acknowledgments (NACK) in case of a transmission failure. Orchestrations can use delivery notifications to subscribe to those ACKs and NACKs in order to know if a message sent on a one-way send port has been successfully transmitted. Delivery Notifications can be “activated” in two ways: The most common and easy way is to set the Delivery Notification property of a logical send port (in the orchestration designer) to Transmitted: Another way is to set the BTS.AckRequired context property of the message to be sent to true: NOTE: fundamentally, those methods are strictly equivalent since the fact of setting the Delivery Notification to Transmitted on the send port only tells BizTalk the BTS.AckRequired context property has to be set to true on the outgoing message. Related context properties ACKs and NACKs have a common set of propoted context properties, which are : Propriété Description AckType Equals ACK when successful or NACK otherwise AckID MessageID of the message concerned by the acknowledgment AckOwnerID InstanceID of the instance associated with the acknowledgment AckSendPortID ID of the send port AckSendPortName Name of the send port AckOutboundTransportLocation URI of the send port AckReceivePortID ID of the port the message came from AckReceivePortName Name of the port the message came from AckInboundTransportLocation URI of the port the message came from Detailed behavior The way Delivery Notifications are handled by BizTalk is peculiar compared to the standard behavior of the Message Box: if no active subscription exists for the acknowledgment, it is simply discarded. The direct consequence of this is that there can be no routing failure for an acknowledgment, and an acknowledgment cannot be suspended. Moreover, when a message is sent to a send port where Delivery Notification = Transmitted, a correlation set is initialized and a correlation token is attached to the message (Context property: CorrelationToken). This correlation token will also be attached to the acknowledgment. So when the acknowledgment is issued, it is automatically routed to the source orchestration. Finally, when a NACK is received by the source orchestration, a DeliveryFailureException is thrown, which can be caught in Catch section. Context of the problem Consider this scenario: In an orchestration, Delivery Notifications are activated on a One-Way send port In case of a transmission failure, the messaging instance is suspended and the orchestration catches an exception (DeliveryFailureException). When the exception is caught, the orchestration does some logging and then terminates (thanks to a Terminate shape). So that leaves only the suspended messaging instance, waiting to be resumed. Symptoms Once the problem that caused the transmission failure is solved, the messaging instance is resumed. Considering what was said in the reminder, we would expect the instance to complete, leaving no active or suspended instance. Nevertheless, the result is that the messaging instance is once more suspended, this time because of a routing failure: The routing failure report shows that the suspended message has the following attached properties: Explanation Those properties clearly indicate that the message being suspended is an acknowledgment (ACK in this case), which was published in the message box and was supended because no subscribers were found. This makes sense, since the source orchestration was terminated before we resumed the messaging instance. So its subscription to the acknowledgments was no longer active when the ACK was published, which explains the routing failure. But this behavior is in direct contradiction with what was said earlier: an acknowledgment must be discarded when no subscriber is found and therefore should not be suspended. Cause It is indeed an outright bug, which appeared with the SP1 of BizTalk 2006 R2 and was never corrected since then: not in the next 4 CUs, not in BizTalk 2009, not in 2010 and not event in 2013 – though I haven’t tested CU1 and CU2 for this last edition, but I bet there is nothing to be expected from those CUs (on this particular point). Side effects This bug can have pretty nasty side effects: this behavior can be propagated to other ports, due to routing mechanisms. For instance: you have configured the ESB Toolkit and have activated the “Enable routing failure for failed messages”. The result will be that the ESB Exception SQL send port will also try and publish ACKs or NACKs concerning its own messaging instances. In itself, this is already messy, but remember that those acknowledgments will also have the source correlation token attached to them… See how far it goes? Well, actually there is more: in SQL send ports, transactions will be rolled back because of the routing failure (I guess it also happens with other adapters - like Oracle, but I haven’t tested them). Again, think of what happens when the send port is the ESB Exception send port: your BizTalk box is going mad, but you have no idea since no exception can be written in the exception database! All of this can be tricky to diagnose, I can tell you that… Solution There is no real solution, only a work-around, but it won’t solve all of the problems and side effects. The idea is to create an orchestration which subscribes to all acknowledgments. That is to say: The message type of the incoming message will be XmlDocument The BTS.AckType property exists The logical receive port will use direct binding By doing so, all acknowledgments will be consumed by an instance of this orchestration, thus avoiding the routing failure. Here is an example of what this orchestration could look like: In order not to pollute the HAT and the DTA Db (after all, this orchestration is only meant to be a palliative to some faulty internal BizTalk mechanism, so there should be no trace of its execution), all tracking must be deactivated:

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  • WebCenter Customer Spotlight: Guizhou Power Grid Company

    - by me
    Author: Peter Reiser - Social Business Evangelist, Oracle WebCenter  Solution SummaryGuizhou Power Grid Company is responsible for power grid planning, construction, management, and power distribution in Guizhou Province, serving 39 million people. Giuzhou has 49,823 employees and an annual revenue of over $5 Billion. The business objectives were to consolidate information contained in disparate systems into a single knowledge repository and provide a safe and efficient way for staff and managers to access, query, share, manage, and store business information. Guizhou Power Grid Company saved more than US$693,000 in storage costs, reduced  average search times from 180 seconds to 5 seconds and solved 80% to 90% of technology and maintenance issues by searching the Oracle WebCenter Content management system. Company OverviewA wholly owned subsidiary of China Southern Power Grid Company Limited, Guizhou Power Grid Company is responsible for power grid planning, construction, management, and power distribution in Guizhou Province, serving 39 million people. Giuzhou has 49,823 employees and an annual revenue of over $5 Billion. Business ChallengesThe business objectives were to consolidate information contained in disparate systems, such as the customer relationship management and power grid management systems, into a single knowledge repository and provide a safe and efficient way for staff and managers to access, query, share, manage, and store business information. Solution DeployedGuizhou Power Grid Company  implemented Oracle WebCenter Content to build a content management system that enabled the secure, integrated management and storage of information, such as documents, records, images, Web content, and digital assets. The content management solution was integrated with the power grid, customer service, maintenance, and other business systems, as well as the corporate Web site. Business Results Saved more than US$693,000 in storage costs and shortened the material distribution time by integrating the knowledge management solution with the power grid, customer service, maintenance, and other business systems, as well as the corporate Web site Enabled staff to search 31,650 documents using catalogs, multidimensional attributes, and knowledge maps, reducing average search times from 180 seconds to 5 seconds and saving approximately 1,539 hours in annual search time Gained comprehensive document management, format transformation, security, and auditing capabilities Enabled users to upload new documents and supervisors to check the accuracy of these documents online, resulting in improved information quality control Solved 80% to 90% of technology and maintenance issues by searching the Oracle content management system for information, ensuring IT staff can respond quickly to users’ technical problems Improved security by using role-based access controls to restrict access to confidential documents and information Supported the efficient classification of corporate knowledge by using Oracle’s metadata functions to collect, tag, and archive documents, images, Web content, and digital assets “We chose Oracle WebCenter Content, as it is an outstanding integrated content management platform. It has allowed us to establish a system to access, query, share, manage, and store our corporate assets. This has laid a solid foundation for Guizhou Power Grid Company to improve management practices.” Luo Sixi, Senior Information Consultant, Guizhou Power Grid Company Additional Information Guizhou Power Grid Company Customer Snapshot Oracle WebCenter Content

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  • Bing Maps WPF Hack

    - by Chris Gardner
    I've spent the past couple of days adding the Bing Maps WFP Control to an application I'm developing. I kept running into a strange thing that was driving me crazy. I have the control in the bottom of a StackPanel, under a Grid. No matter how hard I tried, setting the Height of the Bing control to Auto would cause the ActualHeight to always be 60.93. Now, I still don't know why this is happening. Truth be told, I'm not too sure I care. I did, however, find a reasonable hack around the problem. I do know the size of everything else. As such, I tied into the SizeChanged Event of the StackPanel. Using this, I could set the Height to the correct size based on the new size of the panel. private void ResizeMap( object sender, SizeChangedEventArgs e ) { myMap.Height = ((StackPanel)sender).ActualHeight - 75.0; } The hard-coded number is was because I had a fixed height of controls above my map. If you have dynamic elements, you could easily iterate through them and delete out the portions. So, there you have it. It's not much, but it annoyed the Smurf out of me for a brief period of time. Since I never found an answer, I figured I'd share.

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  • MySQL Connect Keynotes and Presentations Available Online

    - by Bertrand Matthelié
    72 1024x768 Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Following the tremendous success of MySQL Connect, you can now watch some of the keynotes online: The State of the Dolphin – by Oracle Chief Corporate Architect Edward Screven and MySQL Vice President of Engineering Tomas Ulin 72 1024x768 Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Cambria","serif";} MySQL Perspectives – featuring power users of MySQL who share their experiences and perspectives: Jeremy Cole, DBA Team Manager, Twitter Daniel Austin, Chief Architect, PayPal Ash Kanagat, IT Director; and Shivinder Singh, Database Architect, Verizon Wireless You can also access slides from a number of MySQL Connect presentations in the Content Catalog. Missing ones will be added shortly (provided the speakers consented to it). Enjoy!

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  • Membership Provider Parte 1

    - by Jason Ulloa
    Asp.net ha sido una de las tecnologías creadas por Microsoft de mas rápido crecimiento por la facilidad para los desarrolladores de crear sitios web. Una de las partes de mayor importancia que tiene asp.net es el contar con el Membership Provider o proveedor de Membrecía, que permite la creación, manejo y mantenimiento de un sistema completo de control y autenticación de usuarios. Para dar inicio a la serie de post que escribiré sobre que es Membeship y cuáles son las funcionalidades principales daremos unas definiciones. Tal como se menciono anteriormente con el membership provider podemos crear un sistema de control de usuarios completos, entre las funcionalidades principales podemos encontrar: * Creación de usuarios * Almacenamiento de información en base de datos * Autenticación, bloqueos y seguimiento Otras de las ventajas que cabe resaltar, es que, algunos de los controles de asp.net ya traen "naturalmente" en sus funciones la implementación del membership provider, tal como el control "Login" o los controles de estado de usuario, lo cual nos permite que con solo arrastrarlos al diseñador estén funcionando. Membership provider es poderoso, pero su funcionalidad y seguridad se ven aumentadas cuando se integra con otros proveedores de asp.net como lo son RoleProvider y Profile Provider (estos los discutiremos en otros post). En la siguiente figura, podemos ver como se distribuyen algunoS provider creados por Microsoft Antes de iniciar con la implementación de membership debes conocer cosas básicas como el espacio de nombres al que pertenece, el cual es: System.Web.Security que se encuentra dentro del ensamblado System.Web. Algo que debe tomarse en cuenta, es que, para poder utilizar cualquiera de los miembros de la clase, debemos hacer la referencia respectiva. Por defecto, el membership provider está diseñado para trabajar directamente con SQL Server, de ahí que su nombre completo seria SQL Membership Provider. Sin embargo, debido a su gran flexibilidad podemos extenderlo a cualquier base de datos o bien modificarlo para adapatarlo a nuestras necesidades. En los siguientes posts, discutiremos como crear un proveedor personalizado utilizando Entity Framework, separando las capas de acceso y datos y cuáles son las principales funciones que podemos aplicar. En palabras básicas y sin entrar muy hondo en el tema, hemos descrito el objetivo del Membership Provider, para todos los que desean ampliar pueden hacerlo en: http://msdn.microsoft.com/es-es/library/system.web.security.membership%28v=vs.100%29.aspx

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  • Extra Life 2012 - The Final Plea ... Until the Next One

    - by Chris Gardner
    I thought I'd share the email stream that my friends and family get about the event.So, here we are again. We scream closer to the event, and the goal is not met.I was approached by the ghost of feral platypii past last night. Well, approached is putting it lightly. I was mugged by the ghost of platypii past last night. He reminded me, in no uncertain terms that I have only reached the midway point of my fundraising goal. He then reminded me, in even less uncertain terms, that we are one week away from the event. There were other reminders past that, but this is a family broadcast. *shudder*Now, let us be serious for a moment. The event organizers claim a personal story helps to tug heart strings, whatever those are...I've been to Children's Hospital of Birmingham. I had to take Spawn, the Latter, there to verify she was not going to die. Instead, she's just a ticking time bomb for the next generation, but I digress.While I was there, I saw things. I saw child after child after child waiting for their appointment. I saw the most sublime displays of children's art juxtaposed with hospital sterilization that I could ever possibly imagine. I saw and heard things that only occur in the nightmares of parents, and I was only in the waiting rooms.But I will never forget the 10-ish year old girl that came in for her regularly scheduled dialysis appointment ... as if it was just another Friday afternoon. She had her school books, a little snack, a book to read for pleasure, and a DVD, in case she finished her homework a little early. You know, everything you'd need for an afternoon hooked up to a huge medical machine that going to clean out all the toxins in your blood. As she entered the secured area, she warmly greeted all the doctors and nurses with the same familiarity that I would greet the staff of my favorite coffee shop as I stopped in for my morning cup of coffee.I don't know the status of that little girl. I don't know if she's healthy or, quite frankly, alive. I don't even know her name, as I only heard it in passing for the 37 seconds our paths crossed. However, I do remember being incredibly moved and touched by her upbeat attitude about the situations, and I hope that my efforts last two Octobers got her, in some way, a little comfort.And, if she is still with us, I hope we can get her a little more.=== PREVIOUS MESSAGE FOLLOWS ===Greetings (Again),If you are receiving this updated message, then you didn't feel generous the first time. Now, I tried to be nice the first time. I tried to send a simple, unobtrusive email message to get you into the spirit. Well, much like the bell ringers that I ignore in front of the Wal-Mart, you ignored me.I probably should have seen that coming...However, unlike those poor souls, I know how to contact you. And I can find out where you live. So, so, so, you better feel lucky that I'm too lazy to terrorize you people, but cause I could do it.Remember, it's not for me, it's for those poor kids... and the feral platypii.  Because, we can make more children, but platypii are hard to come by.=== ORIGINAL MESSAGE FOLLOWS ===It's that time of year again. The time when I beg you for money for charity. See, unlike those bell ringers outside Wal-Mart, I don't do it when you have ten bazillion holiday obligations...Once again, I will be enduring a 24-hour marathon of gaming to raise money for Children Hospital in Birmingham. All the money goes straight to them, and you get to tell Uncie Samuel that you're good for that money. I'd REALLY like to break $1000 this year, as I have come REALLY close for the past 2 year to doing so.This year, the event will take place on October 20th, beginning at 8 A.M. Once again, I will try to provide some web streams, etc, if you want to point and laugh (especially if I have to result to playing Dance Central at 4 AM to stay awake for the last part.)Look at it this way, I'm going to badger you about this for the next month. You might as well donate some money so you can righteously tell me to shut the Smurf up.You can place your bid at the link below. Feel free to spread the word to anyone and everyone.I thank you. The children thank you. Several breeds of feral platypus thank you. Maybe, just maybe, doing so will help you feel the love felt by re-fried beans when lovingly hugged in a warm tortilla.Enjoy your burrito.http://www.extra-life.org/participant/cgardner

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  • Webcast: Everything You Need To Know About AutoInvoice Date Derivation & Accounting Rules

    - by Annemarie Provisero-Oracle
    Webcast: Everything You Need To Know About AutoInvoice Date Derivation & Accounting Rules Date: June 11, 2014 at 11:00 am ET, 9:00 am MT, 4:00 pm GMT, 8:30 pm IST This one-hour session is part two of a three part series on AutoInvoice and is recommended for technical and functional users who would like a better understanding of Date Derivation and Accounting Rules as they relate to AutoInvoice. We will review commonly encountered issues, troubleshooting steps and tools available to assist in assessing and resolving issues. Topics will include: Commonly encountered issues when using Date Derivation & Accounting Rules with AutoInvoice Troubleshooting Date Derivation & Accounting Rules Related diagnostic tools Details & Registration: Doc ID 1671932.1

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  • SO-Aware @ TechReady (Microsoft Event)

    - by SURESH GIRIRAJAN
    A session on SO-Aware is presented at Microsoft TechReady event this week check here for more details : http://tellagostudios.com/blog/so-aware-highlighted-microsoft-techready Check here for more details on SO-Aware and how to leverage within your enterprise if you’re using BizTalk Server, WCF Services and services build on Azure. It provides lot of capability such as: o    Centralized service repository o    Centralized configuration management o    Service testing o    Monitoring o    Transparent integration with technologies such as Visual Studio, BizTalk Server, Windows Server & Azure AppFabric among many others o    SO-Aware Test Workbench provides developers with a visually rich environment to model and control the execution of load and functional tests in a SOA infrastructure. This tool includes the first native WCF load testing engine allowing developers to transparently load test applications built on Microsoft's service oriented technologies such as WCF, BizTalk Server or the Windows Server or Azure AppFabric.

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  • Oracle Developer Day, Romania, 2012

    - by Geertjan
    I'm on the way back from a great experience in Cluj, Romania: the Oracle Developer Day that was held here today. After the Oracle Developer Day in Warsaw, two days ago, I flew to Bucharest and then had to wait about 6 hours for the flight to Cluj. So I spent several of those hours in a taxi, with a very nice driver who showed me all over the place in Bucharest, such as the Palace of Parliament (according to Wikipedia, "the world's largest civilian building, most expensive administrative building, and heaviest building"): He also taught me a lot of Romanian. (My current phonetic-based vocabulary can be admired and/or ridiculed here.) Meeting Emilian Bold (third on the right below) from the NetBeans Dream Team was a definite highlight: The above shows the three speakers on the Java Track "preparing" for their sessions; me, Lukas Jungmann, and Emilian Bold. In Oracle's Gregor Rayman's keynote, this particular slide responded well to my NetBeans heart: The "Java Track" had sessions on Java EE 6, the NetBeans Platform, and Java Web Services, as well as "What's New in NetBeans IDE 7.1", where Emilian, shown in action below, outlined the NetBeans community, e.g., the NetBeans Dream Team and the NetBeans governance board. (But it was all in Romanian so I'm not really sure what was said exactly!) Finally, there was time to recover from the whole day, right before my trip back to Bucharest: All in all a great day! Looking forward to remaining in touch with the many people I met today.

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  • EJB Named Criteria - Apply bind variable in Backingbean

    - by Deepak Siddappa
    EJB Named criteria are predefined and reusable where-clause definitions that are dynamically applied to a ViewObject query. Here we often use to filter the ViewObject SQL statement query based on Where Clause conditions.Take a scenario where we need to filter the SQL statements query based on Where Clause conditions, instead of playing with SQL statements use the EJB Named Criteria which is supported by default in ADF and set the Bind Variable parameter at run time.You can download the sample workspace from here [Runs with Oracle JDeveloper 11.1.2.0.0 (11g R2) + HR Schema] Implementation StepsCreate Java EE Web Application with entity based on Employees table, then create a session bean and data control for the session bean.Open the DataControls.dcx file and create sparse xml for as shown below. In sparse xml navigate to Named criteria tab -> Bind Variable section, create binding variable deptId. Now create a named criteria and map the query attributes to the bind variable. In the ViewController create index.jspx page, from data control palette drop employeesFindAll->Named Criteria->EmployeesCriteria->Table as ADF Read-Only Filtered Table and create the backingBean as "IndexBean".Open the index.jspx page and remove the "filterModel" binding from the table, add <af:inputText />, command button and bind them to backingBean. For command button create the actionListener as "applyEmpCriteria" and add below code to the file. public void applyEmpCriteria(ActionEvent actionEvent) { DCIteratorBinding dc = (DCIteratorBinding)evaluteEL("#{bindings.employeesFindAllIterator}"); ViewObject vo = dc.getViewObject(); vo.applyViewCriteria(vo.getViewCriteriaManager().getViewCriteria("EmployeesCriteria")); vo.ensureVariableManager().setVariableValue("deptId", this.getDeptId().getValue()); vo.executeQuery(); } /** * Programmtic evaluation of EL * * @param el EL to evalaute * @return Result of the evalutaion */ public Object evaluteEL(String el) { FacesContext fctx = FacesContext.getCurrentInstance(); ELContext elContext = fctx.getELContext(); Application app = fctx.getApplication(); ExpressionFactory expFactory = app.getExpressionFactory(); ValueExpression valExp = expFactory.createValueExpression(elContext, el, Object.class); return valExp.getValue(elContext); } Run the index.jspx page, enter departmentId value as 90 and click in ApplyEmpCriteria button. Now the bind variable for the Named criteria will be applied at runtime in the backing bean and it will re-execute ViewObject query to filter based on where clause condition.

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  • Daten versionieren mit Oracle Database Workspace Manager

    - by Heinz-Wilhelm Fabry (DBA Community)
    Wie können extrem lange Transaktionen durchgeführt werden, also Transaktionen, die Datensätze über Stunden oder Tage exklusiv sperren, ohne dass diese langen Transaktionen 'normale' Transaktionen auf diesen Datensätzen behindern? Solche langen Transakionen sind zum Beispiel im Spatial Umfeld keine Seltenheit. Wie können unterschiedliche historische Zustände von Produktionsdaten online zeitlich unbegrenzt vorgehalten werden? Die UNDO Daten, die das gesamte Änderungsvolumen einer Datenbank vorhalten, gewährleisten in der Regel nur einen zeitlich sehr limitierten Zugriff auf 'ältere' Daten. Und die Technologie der database archives, auch bekannt unter dem Namen Total Recall, erlaubt einerseits keine Änderungen an den älteren Daten und steht andererseits ausschließlich in der Enterprise Edition der Datenbank zur Verfügung. Wie kann man die aktuellsten Produktionsdaten für WHAT-IF-Analysen verändern und währenddessen andere Benutzer ungestört auf den Originaldaten weiterarbeiten lassen? Ein SET TRANSACTION READ ONLY erlaubt keinerlei Änderungen und ist ebenfalls begrenzt auf die 'Reichweite' der UNDO Informationen. Zwar könnte man für derartige Analysen eine Datenbankkopie aus dem Backup aufbauen oder eine Standby Lösung implementieren, aber das ist doch eher aufwändig. Es gibt eine verblüffend einfache Antwort auf diese scheinbar komplizierten Fragen. Sie heisst Oracle Database Workspace Manager oder kurz Workspace Manager (WM). Der WM ist ein Feature der Datenbank seit Oracle9i, das sowohl in der Standard als auch in der Enterprise Edition zur Verfügung steht. Anders als in den ersten Versionen ist er längst auch Bestandteil jeder Installation. Um so erstaunlicher ist es, dass so wenige Kunden ihn kennen. Dieser Tipp soll dazu beitragen, das zu ändern.

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  • Why everybody should do Sales!

    - by FelixWehmeyer
    I speak with many business students and ask them what job they want to get into. Most of them tell me they want a job in Marketing, Management Consulting or Finance. I hardly ever hear “Sales, that is what I want to do”, and I often wonder why. I would like to start with a quote from Zig Ziglar, a successful salesman: "Nothing happens until someone sells something." But to get back to the main point, why wouldn’t you want to get in sales? When people think of sales, they picture a typical salesman in their head and think that selling is scary and all about manipulating, pressuring and pushing someone into buying something they don’t need. Are these stereotypes accurate? I don’t believe so: So why should you want to be in sales? If you think about selling as providing the solution for the problem and talking about the benefits of making a decision, then every job in this world comes out of selling. In every job you deal with coworkers that you want to convince of your ideas or convincing your boss that the project you want to work on is good for the company.  These days, consumers and businesses are very well informed about services and products. When we are talking about highly complex products, such as IT solutions, businesses don’t accept your run-of-the-mill salesman who is pushing a sale. These are often long projects where salespeople have a consulting and leading role. Salespeople need to be able to consult companies and customers with their problem and convince a client that their solution is the best fit. Next to the fact that sales, is by far, not as scary and shady as you thought, there are a few points that will make you want to consider a sales career: Negotiating skills – When you are in sales you will learn how to negotiate. Salespeople learn to listen to their customers and try to make them happy, overcoming objections and come to a final agreement that both parties are happy with. Persistence/Challenge – As a salesperson you will often hear a negative answer, in a sales role you will start to embrace this and see a ‘no’ as a challenge not as a rejection. This attitude change can help you a lot in your career, but also in your personal life. You will become more optimistic and gain a go-getter attitude. Salary – As salespeople are seen as the moneymakers for the company, companies often reward their sales teams generously. Most likely in a sales role, you will receive a good basic salary and often you get nice bonuses on top of that based on your performance. Oracle is, for instance, the company that offers the highest average commission in the world. Further you can expect many other benefits as companies know that there is a high demand for good salespeople. Teamwork – Sales is a lot like having your own business, you are responsible for your own territory or set of clients. You are the one who is responsible for the revenue coming from that territory. So in order to gain revenue you will have to work together with many departments and people to make that happen. Every (potential) client could be seen as a different project, and you are the project leader. Understanding customers and the business – From any job that you choose sales will get you the most insight in the market. Salespeople are usually well-connected, talk with different customers and learn about the market and are up-to-date about all latest changes. Even if you want to change to a different role in the long run, you have a great head start as you understand the market and customers like no one else. Job security – Look at all the job postings out there. Many of them are sales-related. So if you want to have a steady job, plenty of choice and companies willing to invest in you, sales could be something for you.  Are you interested in exploring a sales career? At Oracle we are always looking for good sales professionals and fresh graduates who want to get into sales! For many languages such as Flemish, Dutch, German, French, Swedish and Norwegian (and more) we are currently looking for graduates who want to develop their career in Oracle. Please have a look at this article for the experience of a Business Development Consultant at Oracle in Dublin. Want to learn more about this job check out this link or send an email to jessica.ebbelaar-at-oracle.com! Have a look at our website http://campus.oracle.com for all of our other latest sales and non-sales vacancies!

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  • 12c - Utl_Call_Stack...

    - by noreply(at)blogger.com (Thomas Kyte)
    Over the next couple of months, I'll be writing about some cool new little features of Oracle Database 12c - things that might not make the front page of Oracle.com.  I'm going to start with a new package - UTL_CALL_STACK.In the past, developers have had access to three functions to try to figure out "where the heck am I in my code", they were:dbms_utility.format_call_stackdbms_utility.format_error_backtracedbms_utility.format_error_stackNow these routines, while useful, were of somewhat limited use.  Let's look at the format_call_stack routine for a reason why.  Here is a procedure that will just print out the current call stack for us:ops$tkyte%ORA12CR1> create or replace  2  procedure Print_Call_Stack  3  is  4  begin  5    DBMS_Output.Put_Line(DBMS_Utility.Format_Call_Stack());  6  end;  7  /Procedure created.Now, if we have a package - with nested functions and even duplicated function names:ops$tkyte%ORA12CR1> create or replace  2  package body Pkg is  3    procedure p  4    is  5      procedure q  6      is  7        procedure r  8        is  9          procedure p is 10          begin 11            Print_Call_Stack(); 12            raise program_error; 13          end p; 14        begin 15          p(); 16        end r; 17      begin 18        r(); 19      end q; 20    begin 21      q(); 22    end p; 23  end Pkg; 24  /Package body created.When we execute the procedure PKG.P - we'll see as a result:ops$tkyte%ORA12CR1> exec pkg.p----- PL/SQL Call Stack -----  object      line  object  handle    number  name0x6e891528         4  procedure OPS$TKYTE.PRINT_CALL_STACK0x6ec4a7c0        10  package body OPS$TKYTE.PKG0x6ec4a7c0        14  package body OPS$TKYTE.PKG0x6ec4a7c0        17  package body OPS$TKYTE.PKG0x6ec4a7c0        20  package body OPS$TKYTE.PKG0x76439070         1  anonymous blockBEGIN pkg.p; END;*ERROR at line 1:ORA-06501: PL/SQL: program errorORA-06512: at "OPS$TKYTE.PKG", line 11ORA-06512: at "OPS$TKYTE.PKG", line 14ORA-06512: at "OPS$TKYTE.PKG", line 17ORA-06512: at "OPS$TKYTE.PKG", line 20ORA-06512: at line 1The bit in red above is the output from format_call_stack whereas the bit in black is the error message returned to the client application (it would also be available to you via the format_error_backtrace API call). As you can see - it contains useful information but to use it you would need to parse it - and that can be trickier than it seems.  The format of those strings is not set in stone, they have changed over the years (I wrote the "who_am_i", "who_called_me" functions, I did that by parsing these strings - trust me, they change over time!).Starting in 12c - we'll have structured access to the call stack and a series of API calls to interrogate this structure.  I'm going to rewrite the print_call_stack function as follows:ops$tkyte%ORA12CR1> create or replace 2  procedure Print_Call_Stack  3  as  4    Depth pls_integer := UTL_Call_Stack.Dynamic_Depth();  5    6    procedure headers  7    is  8    begin  9        dbms_output.put_line( 'Lexical   Depth   Line    Name' ); 10        dbms_output.put_line( 'Depth             Number      ' ); 11        dbms_output.put_line( '-------   -----   ----    ----' ); 12    end headers; 13    procedure print 14    is 15    begin 16        headers; 17        for j in reverse 1..Depth loop 18          DBMS_Output.Put_Line( 19            rpad( utl_call_stack.lexical_depth(j), 10 ) || 20                    rpad( j, 7) || 21            rpad( To_Char(UTL_Call_Stack.Unit_Line(j), '99'), 9 ) || 22            UTL_Call_Stack.Concatenate_Subprogram 23                       (UTL_Call_Stack.Subprogram(j))); 24        end loop; 25    end; 26  begin 27    print; 28  end; 29  /Here we are able to figure out what 'depth' we are in the code (utl_call_stack.dynamic_depth) and then walk up the stack using a loop.  We will print out the lexical_depth, along with the line number within the unit we were executing plus - the unit name.  And not just any unit name, but the fully qualified, all of the way down to the subprogram name within a package.  Not only that - but down to the subprogram name within a subprogram name within a subprogram name.  For example - running the PKG.P procedure again results in:ops$tkyte%ORA12CR1> exec pkg.pLexical   Depth   Line    NameDepth             Number-------   -----   ----    ----1         6       20      PKG.P2         5       17      PKG.P.Q3         4       14      PKG.P.Q.R4         3       10      PKG.P.Q.R.P0         2       26      PRINT_CALL_STACK1         1       17      PRINT_CALL_STACK.PRINTBEGIN pkg.p; END;*ERROR at line 1:ORA-06501: PL/SQL: program errorORA-06512: at "OPS$TKYTE.PKG", line 11ORA-06512: at "OPS$TKYTE.PKG", line 14ORA-06512: at "OPS$TKYTE.PKG", line 17ORA-06512: at "OPS$TKYTE.PKG", line 20ORA-06512: at line 1This time - we get much more than just a line number and a package name as we did previously with format_call_stack.  We not only got the line number and package (unit) name - we got the names of the subprograms - we can see that P called Q called R called P as nested subprograms.  Also note that we can see a 'truer' calling level with the lexical depth, we can see we "stepped" out of the package to call print_call_stack and that in turn called another nested subprogram.This new package will be a nice addition to everyone's error logging packages.  Of course there are other functions in there to get owner names, the edition in effect when the code was executed and more. See UTL_CALL_STACK for all of the details.

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  • Oracle Database 12c ist verfügbar: 12 neue Features für DBAs

    - by Ulrike Schwinn (DBA Community)
    Seit 25.Juni steht das neue Datenbank Release Oracle Database 12c für die Plattformen Linux x86 und Solaris (Sparc64 und x86) zum Download zur Verfügung. Um einen Vorgeschmack auf einige der neuen Features zu geben, haben wir im aktuellen Tipp eine Auswahl von 12 interessanten Neuerungen zusammengestellt. In der APEX Community finden Sie parallel hierzu eine Übersicht über interessante Neuerungen für Entwickler. Bei den Beschreibungen handelt es sich um eine kurze Zusammenfassung der einzelnen Neuerungen wie z.B. Multitenant Database, Data Redaction, ILM, Datenbank Security, Application Continuity, Online Operationen und vieles mehr. Mehr dazu ist gleich hier nachzulesen!

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  • Mix metrics for June 14, 2010

    - by tim.bonnemann
    We've been busy working on a few improvements to Mix which we plan to roll out over the coming weeks. In the meantime, here are our latest community metrics once again: Registered Mix users (weekly growth) 64,769 (+0.9%) Active users (percent of total) Last 30 days: 4,682 (7.2%) Last 60 days: 8,251 (12.7%) Last 90 days: 11,936 (18.4%) Traffic (30-day) Visits: 13,674 Page views: 77,808 Twitter Followers: 3,451 List mentions: 205 User-generated content (30-day) New ideas: 29 New questions: 38 New comments: 167 Groups There are currently 1,440 Mix groups (requires login).

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  • C#/.NET Little Wonders: Getting Caller Information

    - by James Michael Hare
    Originally posted on: http://geekswithblogs.net/BlackRabbitCoder/archive/2013/07/25/c.net-little-wonders-getting-caller-information.aspx Once again, in this series of posts I look at the parts of the .NET Framework that may seem trivial, but can help improve your code by making it easier to write and maintain. The index of all my past little wonders posts can be found here. There are times when it is desirable to know who called the method or property you are currently executing.  Some applications of this could include logging libraries, or possibly even something more advanced that may server up different objects depending on who called the method. In the past, we mostly relied on the System.Diagnostics namespace and its classes such as StackTrace and StackFrame to see who our caller was, but now in C# 5, we can also get much of this data at compile-time. Determining the caller using the stack One of the ways of doing this is to examine the call stack.  The classes that allow you to examine the call stack have been around for a long time and can give you a very deep view of the calling chain all the way back to the beginning for the thread that has called you. You can get caller information by either instantiating the StackTrace class (which will give you the complete stack trace, much like you see when an exception is generated), or by using StackFrame which gets a single frame of the stack trace.  Both involve examining the call stack, which is a non-trivial task, so care should be done not to do this in a performance-intensive situation. For our simple example let's say we are going to recreate the wheel and construct our own logging framework.  Perhaps we wish to create a simple method Log which will log the string-ified form of an object and some information about the caller.  We could easily do this as follows: 1: static void Log(object message) 2: { 3: // frame 1, true for source info 4: StackFrame frame = new StackFrame(1, true); 5: var method = frame.GetMethod(); 6: var fileName = frame.GetFileName(); 7: var lineNumber = frame.GetFileLineNumber(); 8: 9: // we'll just use a simple Console write for now 10: Console.WriteLine("{0}({1}):{2} - {3}", 11: fileName, lineNumber, method.Name, message); 12: } So, what we are doing here is grabbing the 2nd stack frame (the 1st is our current method) using a 2nd argument of true to specify we want source information (if available) and then taking the information from the frame.  This works fine, and if we tested it out by calling from a file such as this: 1: // File c:\projects\test\CallerInfo\CallerInfo.cs 2:  3: public class CallerInfo 4: { 5: Log("Hello Logger!"); 6: } We'd see this: 1: c:\projects\test\CallerInfo\CallerInfo.cs(5):Main - Hello Logger! This works well, and in fact CallStack and StackFrame are still the best ways to examine deeper into the call stack.  But if you only want to get information on the caller of your method, there is another option… Determining the caller at compile-time In C# 5 (.NET 4.5) they added some attributes that can be supplied to optional parameters on a method to receive caller information.  These attributes can only be applied to methods with optional parameters with explicit defaults.  Then, as the compiler determines who is calling your method with these attributes, it will fill in the values at compile-time. These are the currently supported attributes available in the  System.Runtime.CompilerServices namespace": CallerFilePathAttribute – The path and name of the file that is calling your method. CallerLineNumberAttribute – The line number in the file where your method is being called. CallerMemberName – The member that is calling your method. So let’s take a look at how our Log method would look using these attributes instead: 1: static int Log(object message, 2: [CallerMemberName] string memberName = "", 3: [CallerFilePath] string fileName = "", 4: [CallerLineNumber] int lineNumber = 0) 5: { 6: // we'll just use a simple Console write for now 7: Console.WriteLine("{0}({1}):{2} - {3}", 8: fileName, lineNumber, memberName, message); 9: } Again, calling this from our sample Main would give us the same result: 1: c:\projects\test\CallerInfo\CallerInfo.cs(5):Main - Hello Logger! However, though this seems the same, there are a few key differences. First of all, there are only 3 supported attributes (at this time) that give you the file path, line number, and calling member.  Thus, it does not give you as rich of detail as a StackFrame (which can give you the calling type as well and deeper frames, for example).  Also, these are supported through optional parameters, which means we could call our new Log method like this: 1: // They're defaults, why not fill 'em in 2: Log("My message.", "Some member", "Some file", -13); In addition, since these attributes require optional parameters, they cannot be used in properties, only in methods. These caveats aside, they do let you get similar information inside of methods at a much greater speed!  How much greater?  Well lets crank through 1,000,000 iterations of each.  instead of logging to console, I’ll return the formatted string length of each.  Doing this, we get: 1: Time for 1,000,000 iterations with StackTrace: 5096 ms 2: Time for 1,000,000 iterations with Attributes: 196 ms So you see, using the attributes is much, much faster!  Nearly 25x faster in fact.  Summary There are a few ways to get caller information for a method.  The StackFrame allows you to get a comprehensive set of information spanning the whole call stack, but at a heavier cost.  On the other hand, the attributes allow you to quickly get at caller information baked in at compile-time, but to do so you need to create optional parameters in your methods to support it. Technorati Tags: Little Wonders,CSharp,C#,.NET,StackFrame,CallStack,CallerFilePathAttribute,CallerLineNumberAttribute,CallerMemberName

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